中华医学超声杂志

应用化学 ›› 1985, Vol. 0 ›› Issue (2): 57-61.

• 研究论文 • 上一篇    下一篇

丙烯腈共聚物动态热产物的在位和在线傅里叶红外光谱研究

赵根祥, 陈邦杰   

  1. 中国科学院山西煤炭化学研究所
  • 收稿日期:1984-05-24 修回日期:1984-12-22 出版日期:1985-06-10 发布日期:1985-06-10

THE IN SITU AND ON LINE FTIR STUDY ON DYNAMIC PYROLYTIC PRODUCTS OF ACRYLONITRLLE COPOLYMERS

Zhao Genxiang, Chen Bangjie   

  1. Shanxi Institute of Coal Chemistry, Academia Sinica
  • Received:1984-05-24 Revised:1984-12-22 Published:1985-06-10 Online:1985-06-10

PDF

445

被引次数

2

摘要： 用在位和在线傅里叶变换红外光谱法研究了丙烯腈(AN)/二丙酮丙烯酰胺(DAA)/丙烯酸甲酯(MA)三元共聚物在氮气中热解时固态和气态产物的动态变化过程。实验结果表明,以300℃下共聚物主要发生先环化后脱氢的反应。在300℃—950℃间,形成的六元环结构继续发生脱氢、脱氮、脱氧以及缩合交联和稠环化,析出HCN、NH3、CH4、CO和CO2等气态产物和形成无定形碳素组元结构的固态残留物。

Abstract: By using in-situ and on-line Fourier transform infrared spectroscopic methods (FTIR),the dynamic change of solid and gaseous products of acrylonitrile (AN) /diacetone acrylamide (DAA)/methylacrylate(MA) copolymers was monitored durin g its pyrolysis innitrogen atmosphere. It was found that at lower temperature of pyrolysis (below 300℃) the cyclization,occurred mainly, then the dehydrogenation reactions. The samples were eventually pyrolyzed at the temperature between 300℃ and 950℃. The gaseous products evolved were HCN, NH3, CH4, CO2, CO etc. and the solid residues were of amorphous carbonaceous structure.

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